Next it can be used to generate a report of the history of network usage. It actually runs a background service/daemon and keeps recording the size of data transfer all the time. Vnstat is bit different from most of the other tools. Check the man page for more information 5. CentOS users need to setup repoforge, since its not available in Epel.īmon supports many options and is capable of producing reports in html format. Install Bmon – Ubuntu, Debian and Fedora users can install from default repos. The output also consists of a graph and a section with packet level details. Bmonīmon (Bandwidth Monitor) is a tool similar to nload that shows the traffic load over all the network interfaces on the system. $ sudo apt-get install iptraf iptraf-ng 4. It shows individual connections and the amount of data flowing between the hosts. Iptraf is an interactive and colorful IP Lan monitor. Install iftop – Ubuntu/Debian/Fedora users get it from default repos. The n option prevents iftop from resolving ip addresses to hostname, which causes additional network traffic of its own. But being based on the pcap library, iftop is able to filter the traffic and report bandwidth usage over selected host connections as specified by the filter.

Iftop uses the pcap library to capture the packets moving in and out of the network adapter, and then sums up the size and count to find the total bandwidth under use.Īlthough iftop reports the bandwidth used by individual connections, it cannot report the process name/id involved in the particular socket connection. Iftop measures the data flowing through individual socket connections, and it works in a manner that is different from Nload. CentOS users need to get nload from Epel repositories. Installing Nload – Fedora and Ubuntu have got it in the default repos. So if you just need to take a quick look at the total bandwidth usage without details of individual processes, then nload will be handy. Easy and simple to use, and does not support many options. It also draws out a graph to indicate the same, the scale of which can be adjusted. Nload is a commandline tool that allows users to monitor the incoming and outgoing traffic separately.

Linux network usage by process